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209P/LINEAR
Classification: Jupiter-family Comet [NEO]          SPK-ID: 1000487
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

[ hide orbit diagram ]
Orbit Diagram
Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using 2-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet has stopped working because of a recent Java upgrade, here is a possible workaround.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


Orbital Elements at Epoch 2455671.5 (2011-Apr-20.0) TDB
Reference: JPL 119 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6917870403184184 6.5399e-09  
a 2.93218130826148 5.5751e-09 AU
q .9037362793422827 1.9153e-08 AU
i 19.36338980718865 3.996e-06 deg
node 65.6597511175484 1.9284e-06 deg
peri 150.3054672515037 5.8359e-06 deg
M 143.8556755156194 3.1394e-07 deg
tp 2454938.660013212582
(2009-Apr-17.16001321)
3.4604e-06 JED
period 1833.938037535581
5.02
5.2305e-06
1.432e-08
d
yr
n .1962988894018266 5.5985e-10 deg/d
Q 4.960626337180678 9.432e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      2409  
   # delay obs. used      9  
   # Doppler obs. used      4  
   data-arc span      3870 days (10.60 yr)  
   first obs. used      2003-12-03  
   last obs. used      2014-07-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .4269  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 12:01:44  

Additional Information
 Earth MOID = .0486491 AU 
 T_jup = 2.797 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 16.7 mag 2. 119 from 222 observations, assumed slope, autocmod 2.5c
comet total magnitude slope K1 15.   n/a 119 autocmod 2.5c
comet nuclear magnitude M2 21.1 mag 1. 119 from 1764 observations, autocmod 2.5c
comet nuclear magnitude slope K2 5.   n/a 119 autocmod 2.5c
comet nuclear phase coefficient PC 0.03   n/a 119 autocmod 2.5c

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2009.3   209P/2008 X2       
 2004.3   209P/2004 CB       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]
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